Mike and Jim Ring, the maestros of muscle cars, might be crafting high-flying machines for millionaires, but they’ve kept their feet firmly on the ground. Every November, the brothers are the rock stars of the Specialty Equipment Market Association show in Las Vegas—think of it as the World Series, but with more horsepower and less spandex. Their automotive masterpieces have graced countless magazine covers, earning them a trophy case full of awards, yet they remain refreshingly down-to-earth.